www.speakeasy.net is always reliable.

just a point of order here, any site that registers "speed" is never dead on. the best way to use them is to let them test your connection and use that first test as a baseline. Then on subsequent tests compare the results. Obviously there is a problem is you're supposed to get say 8Mb and you get 3, but overall don't get overly concerned with a 1-2Mb/s variance.

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